/Engine/Source/Runtime/Engine/Classes/Engine/AssetManager.h
Sees if a specific primary asset passes the custom override filter, subclass this to handle FilterString
virtual bool DoesPrimaryAssetMatchCustomOverride ( [FPrimaryAssetId](API\Runtime\CoreUObject\UObject\FPrimaryAssetId) PrimaryAssetId, const [FPrimaryAssetRulesCustomOverride](API\Runtime\Engine\Engine\FPrimaryAssetRulesCustomOverride) & CustomOverride ) const